Chaotic Stirring in a Tidal System

Chaotic Stirring in a Tidal System

An analysis of a two-dimensional tidal model of the Wadden Sea reveals Lagrangian chaos in the trajectories of water parcels. The associated chaotic stirring results from the transverse intersection of the stable and unstable curves of hyperbolic fixed points in the Lagrangian residual displacement...

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Veröffentlicht in:Science (American Association for the Advancement of Science) 1992-11, Vol.258 (5085), p.1107-1111
Hauptverfasser: Ridderinkhof, H., Zimmerman, J. T. F.
Format: Artikel
Sprache:eng
Schlagworte:
Analysis
Chaos theory
Chaotic systems
Coastal oceanography, estuaries. Regional oceanography
Earth, ocean, space
Exact sciences and technology
External geophysics
Fluid shear
Lagrangian function
Marine
Ocean currents
Particle trajectories
Physics of the oceans
Random walk
Seas
Tidal currents
Tides
Topography
Trajectories
Trapped particles
Velocity distribution
Water
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Beschreibung
Zusammenfassung:An analysis of a two-dimensional tidal model of the Wadden Sea reveals Lagrangian chaos in the trajectories of water parcels. The associated chaotic stirring results from the transverse intersection of the stable and unstable curves of hyperbolic fixed points in the Lagrangian residual displacement field (the tidal Poincaré map). This tidal dispersion mechanism produces rapid water exchange along the channel axis and could be representative of many shallow tidal seas.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.258.5085.1107